Modified gold electrodes based on thiocytosine/guanine-gold nanoparticles for uric and ascorbic acid determination

2013 ◽  
Vol 88 ◽  
pp. 839-846 ◽  
Author(s):  
Adriana Vulcu ◽  
Camelia Grosan ◽  
Liana Maria Muresan ◽  
Stela Pruneanu ◽  
Liliana Olenic
Keyword(s):  
Gold Nanoparticles ◽  
Ascorbic Acid ◽  
Gold Electrodes ◽  
Ascorbic Acid Determination ◽  
Acid Determination

scholarly journals One-Step Synthesis of Anisotropic Gold Nanoparticles with the Aid Extract from Wuluh Starfruit (Averrhoa Bilimbi) Fruit as Reducing and Morphology Controlling Agent

2019 ◽  
Vol 35 (4) ◽  
pp. 1453-1462
Author(s):  
Foliatini ◽  
Nurdiani
Keyword(s):  
Gold Nanoparticles ◽  
Ascorbic Acid ◽  
Antibacterial Activity ◽  
Volume Ratio ◽  
Microwave Oven ◽  
Transmission Electron ◽  
One Step ◽  
Ascorbic Acid Determination ◽  
Anisotropic Gold Nanoparticles ◽  
Acid Determination

The synthesis of anisotropic gold nanoparticles have been successfully conducted using one-step experimental procedures, with the aid of extract from wuluh starfruit (Averrhoa bilimbi) as reducing agent. The synthesis was carried out in the microwave oven at certain power of irradiation. The as-formed nanoparticles were characterized by UV-Vis spectrophotometry and transmission electron microscopy (TEM). The phytochemical assay and ascorbic acid determination was done to support the prediction about the contribution of those compounds in the synthesis. The antimicrobial activity was assayed toward some bacteria. The results confirmed that the amount of phytochemicals and ascorbic acid in the extracts may contribute largely to the effectivity of the synthesis. The morphology of these nanoparticles was greatly affected by both the Au precursor concentration and volume ratio of precursor : extract. The as-formed nanoparticles have medium antibacterial activity, toward Escherichia coli and Bacillus, in which the magnitude of antibacterial activity depends on the ratio of precursor : extract.

Amperometric sensor for L-ascorbic acid determination based on MnO 2 bulk modified screen printed electrode

2000 ◽  
Vol 368 (5) ◽  
pp. 466-470 ◽  
Author(s):  
E. Turkusic ◽  
V. Milicevic ◽  
H. Tahmiscija ◽  
M. Vehabovic ◽  
S. Basic ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Amperometric Sensor ◽  
Screen Printed Electrode ◽  
Ascorbic Acid Determination ◽  
Acid Determination ◽  
Screen Printed

scholarly journals Paper-based platforms with coulometric readout for ascorbic acid determination in fruit juices

The Analyst ◽  
2020 ◽  
Vol 145 (9) ◽  
pp. 3431-3439
Author(s):  
Estefanía Nunez-Bajo ◽  
M. Teresa Fernández-Abedul
Keyword(s):  
Ascorbic Acid ◽  
Low Cost ◽  
Fruit Juices ◽  
Ascorbic Acid Determination ◽  
Cost Determination ◽  
Acid Determination

Paper-based electrochemical platforms with coulometric readout are employed for fast and low cost determination of ascorbic acid in commercial juice samples.

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